This isn't good. The MRI that Josh Edgin got done on his elbow the other day has revealed tendinitis. Anthony DiComo of MLB.com is reporting that Edgin could need Tommy John surgery but is currently undecided.
We've heard of pitchers playing through tendinitis before, so this likely isn't as severe as a sprained or torn ligament, but every case is different, and the fact that Edgin is even thinking about having surgery should worry the Mets given their roster situation.
Besides Edgin, the only left-handed reliever in camp with significant major league experience is Scott Rice, who is recovering from his own surgery -- to remove bone spurs in his arm -- that occurred last summer. The team will probably make every effort to hold onto Rule 5 draft pick Sean Gilmartin, who has never pitched the majors before but may develop into a useful lefty bullpen arm.
The other options are Dario Alvarez, who has pitched very little above High-A St. Lucie so far in his career, and Jack Leathersich, who has strikeout stuff but struggles with control. New York has already said that it will not use hot lefty prospect Steven Matz in the bullpen this year, but you never know.
Edgin originally went in for the MRI because he was experiencing elbow discomfort and a drop in velocity. If he indeed decides to have surgery, it will be interesting to see if the Mets find a replacement in the shallow pool of interior options or if they go outside the organization for help.